Examples with StandardRelationTypeMaker org.janusgraph.graphdb.types.StandardRelationTypeMaker used on opensource projects

Example 1 with StandardRelationTypeMaker

use of org.janusgraph.graphdb.types.StandardRelationTypeMaker in project janusgraph by JanusGraph.

the class ManagementSystem method buildRelationTypeIndex.

private RelationTypeIndex buildRelationTypeIndex(RelationType type, String name, Direction direction, Order sortOrder, PropertyKey... sortKeys) {
    Preconditions.checkArgument(type != null && direction != null && sortOrder != null && sortKeys != null);
    Preconditions.checkArgument(StringUtils.isNotBlank(name), "Name cannot be blank: %s", name);
    Token.verifyName(name);
    Preconditions.checkArgument(sortKeys.length > 0, "Need to specify sort keys");
    for (RelationType key : sortKeys) Preconditions.checkArgument(key != null, "Keys cannot be null");
    Preconditions.checkArgument(!(type instanceof EdgeLabel) || !((EdgeLabel) type).isUnidirected() || direction == Direction.OUT, "Can only index uni-directed labels in the out-direction: %s", type);
    Preconditions.checkArgument(!((InternalRelationType) type).multiplicity().isUnique(direction), "The relation type [%s] has a multiplicity or cardinality constraint in direction [%s] and can therefore not be indexed", type, direction);
    String composedName = composeRelationTypeIndexName(type, name);
    StandardRelationTypeMaker maker;
    if (type.isEdgeLabel()) {
        StandardEdgeLabelMaker lm = (StandardEdgeLabelMaker) transaction.makeEdgeLabel(composedName);
        lm.unidirected(direction);
        maker = lm;
    } else {
        assert type.isPropertyKey();
        assert direction == Direction.OUT;
        StandardPropertyKeyMaker lm = (StandardPropertyKeyMaker) transaction.makePropertyKey(composedName);
        lm.dataType(((PropertyKey) type).dataType());
        maker = lm;
    }
    maker.status(type.isNew() ? SchemaStatus.ENABLED : SchemaStatus.INSTALLED);
    maker.invisible();
    maker.multiplicity(Multiplicity.MULTI);
    maker.sortKey(sortKeys);
    maker.sortOrder(sortOrder);
    // Compose signature
    long[] typeSig = ((InternalRelationType) type).getSignature();
    Set<PropertyKey> signature = Sets.newHashSet();
    for (long typeId : typeSig) signature.add(transaction.getExistingPropertyKey(typeId));
    for (RelationType sortType : sortKeys) signature.remove(sortType);
    if (!signature.isEmpty()) {
        PropertyKey[] sig = signature.toArray(new PropertyKey[signature.size()]);
        maker.signature(sig);
    }
    RelationType typeIndex = maker.make();
    addSchemaEdge(type, typeIndex, TypeDefinitionCategory.RELATIONTYPE_INDEX, null);
    RelationTypeIndexWrapper index = new RelationTypeIndexWrapper((InternalRelationType) typeIndex);
    if (!type.isNew())
        updateIndex(index, SchemaAction.REGISTER_INDEX);
    return index;
}